1. A wet solid is dried over a long period of time by unsaturated air of nonzero constant relative
humidity. The moisture content eventually attained by the solid is termed as the
(A) unbound moisture content
(B) bound moisture content
(C) free moisture content
(D) equilibrium moisture content
2. In a pool boiling experiment, the following phenomena were observed.
a. Natural convection
b. Film boiling
c. Transition boiling
d. Nucleate boiling
3. The number of emails received on six consecutive days is 11, 9, 18, 18, 4 and 15, respectively.
What are the median and the mode for these data?
(A) 18 and 11, respectively
B) 13 and 18, respectively
C) 13 and 12.5, respectively
D) 12.5 and 18, respectively
4. The packing of an existing absorption tower is replaced with a new type of packing. The height of the packing and the inlet conditions are maintained the same as before. Tests reveal that the number of transfer units is lower than before. This indicates that the tower with the new packing, when compared to that with the old packing, will
(A) have a higher rate of absorption of the solute from the gas stream
(B) have a lower rate of absorption of the solute from the gas stream
(C) have the same rate of absorption of the solute from the gas stream
(D) have a lower height of transfer unit
(A) unbound moisture content
(B) bound moisture content
(C) free moisture content
(D) equilibrium moisture content
2. In a pool boiling experiment, the following phenomena were observed.
a. Natural convection
b. Film boiling
c. Transition boiling
d. Nucleate boiling
What are the median and the mode for these data?
(A) 18 and 11, respectively
B) 13 and 18, respectively
C) 13 and 12.5, respectively
D) 12.5 and 18, respectively
4. The packing of an existing absorption tower is replaced with a new type of packing. The height of the packing and the inlet conditions are maintained the same as before. Tests reveal that the number of transfer units is lower than before. This indicates that the tower with the new packing, when compared to that with the old packing, will
(A) have a higher rate of absorption of the solute from the gas stream
(B) have a lower rate of absorption of the solute from the gas stream
(C) have the same rate of absorption of the solute from the gas stream
(D) have a lower height of transfer unit
